Alright, let's solve this math problem step by step. First, we have the number 599. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 111. So, we're going to take the number 599 and add it to itself 111 times.
Step 1: 0 + 599 = 599
Step 2: 599 + 599 = 1198
Step 3: 1198 + 599 = 1797
Step 4: 1797 + 599 = 2396
Step 5: 2396 + 599 = 2995
Step 6: 2995 + 599 = 3594
Step 7: 3594 + 599 = 4193
Step 8: 4193 + 599 = 4792
Step 9: 4792 + 599 = 5391
Step 10: 5391 + 599 = 5990
Step 11: 5990 + 599 = 6589
Step 12: 6589 + 599 = 7188
Step 13: 7188 + 599 = 7787
Step 14: 7787 + 599 = 8386
Step 15: 8386 + 599 = 8985
Step 16: 8985 + 599 = 9584
Step 17: 9584 + 599 = 10183
Step 18: 10183 + 599 = 10782
Step 19: 10782 + 599 = 11381
Step 20: 11381 + 599 = 11980
Step 21: 11980 + 599 = 12579
Step 22: 12579 + 599 = 13178
Step 23: 13178 + 599 = 13777
Step 24: 13777 + 599 = 14376
Step 25: 14376 + 599 = 14975
Step 26: 14975 + 599 = 15574
Step 27: 15574 + 599 = 16173
Step 28: 16173 + 599 = 16772
Step 29: 16772 + 599 = 17371
Step 30: 17371 + 599 = 17970
Step 31: 17970 + 599 = 18569
Step 32: 18569 + 599 = 19168
Step 33: 19168 + 599 = 19767
Step 34: 19767 + 599 = 20366
Step 35: 20366 + 599 = 20965
Step 36: 20965 + 599 = 21564
Step 37: 21564 + 599 = 22163
Step 38: 22163 + 599 = 22762
Step 39: 22762 + 599 = 23361
Step 40: 23361 + 599 = 23960
Step 41: 23960 + 599 = 24559
Step 42: 24559 + 599 = 25158
Step 43: 25158 + 599 = 25757
Step 44: 25757 + 599 = 26356
Step 45: 26356 + 599 = 26955
Step 46: 26955 + 599 = 27554
Step 47: 27554 + 599 = 28153
Step 48: 28153 + 599 = 28752
Step 49: 28752 + 599 = 29351
Step 50: 29351 + 599 = 29950
Step 51: 29950 + 599 = 30549
Step 52: 30549 + 599 = 31148
Step 53: 31148 + 599 = 31747
Step 54: 31747 + 599 = 32346
Step 55: 32346 + 599 = 32945
Step 56: 32945 + 599 = 33544
Step 57: 33544 + 599 = 34143
Step 58: 34143 + 599 = 34742
Step 59: 34742 + 599 = 35341
Step 60: 35341 + 599 = 35940
Step 61: 35940 + 599 = 36539
Step 62: 36539 + 599 = 37138
Step 63: 37138 + 599 = 37737
Step 64: 37737 + 599 = 38336
Step 65: 38336 + 599 = 38935
Step 66: 38935 + 599 = 39534
Step 67: 39534 + 599 = 40133
Step 68: 40133 + 599 = 40732
Step 69: 40732 + 599 = 41331
Step 70: 41331 + 599 = 41930
Step 71: 41930 + 599 = 42529
Step 72: 42529 + 599 = 43128
Step 73: 43128 + 599 = 43727
Step 74: 43727 + 599 = 44326
Step 75: 44326 + 599 = 44925
Step 76: 44925 + 599 = 45524
Step 77: 45524 + 599 = 46123
Step 78: 46123 + 599 = 46722
Step 79: 46722 + 599 = 47321
Step 80: 47321 + 599 = 47920
Step 81: 47920 + 599 = 48519
Step 82: 48519 + 599 = 49118
Step 83: 49118 + 599 = 49717
Step 84: 49717 + 599 = 50316
Step 85: 50316 + 599 = 50915
Step 86: 50915 + 599 = 51514
Step 87: 51514 + 599 = 52113
Step 88: 52113 + 599 = 52712
Step 89: 52712 + 599 = 53311
Step 90: 53311 + 599 = 53910
Step 91: 53910 + 599 = 54509
Step 92: 54509 + 599 = 55108
Step 93: 55108 + 599 = 55707
Step 94: 55707 + 599 = 56306
Step 95: 56306 + 599 = 56905
Step 96: 56905 + 599 = 57504
Step 97: 57504 + 599 = 58103
Step 98: 58103 + 599 = 58702
Step 99: 58702 + 599 = 59301
Step 100: 59301 + 599 = 59900
Step 101: 59900 + 599 = 60499
Step 102: 60499 + 599 = 61098
Step 103: 61098 + 599 = 61697
Step 104: 61697 + 599 = 62296
Step 105: 62296 + 599 = 62895
Step 106: 62895 + 599 = 63494
Step 107: 63494 + 599 = 64093
Step 108: 64093 + 599 = 64692
Step 109: 64692 + 599 = 65291
Step 110: 65291 + 599 = 65890
Step 111: 65890 + 599 = 66489

So, 599*111 = 66489